Refrigerating cabinet



L. G. COPEMAN REFRIGERATING CABINET Filed Feb. 15, 1926 April 23, 1929.

INVENTOR. Zy @panna Patented Apr. 23 1,929.

"uuirunsrarss PATENT orner..

LLOYD G. COPEMAN, 0F FLINT, MICHIGAN, ASSIGNOR T0 COPEMAN LABORATORIES COMPANY, OF FLIN'B, MICHIGAN, AYCORPOBATION 0F MICHIGAN.

REFRIGERATING CABINET.'

Application mea February is, leas. serial No. 88,341.

This invention relates to ice cream or similar cabinets. It is the object of the invention. to provide a construction. which'v eliminates the formation of ice on the cover, or throat of the container. Power refrigeration is rapidly coming into general use for ice cream cabinets, and one of the great annoyances m this type of cooler is the collection of ice either on the cover itself or else on the throat that leads into the container. This results in keeping the cover spaced from the container, permitting air toY get into the container and greatly impairing its efficiency.

It is the object of my invention to do away with this annoyance.

In the drawings :l Fig. 1 is a vertical cross section of a refrigcrating cabinet equipped with my new invention.

Figi. 2 is a similar view of a modified form of .the inufention.1 I v Fig. 3 is a' plan view of the modilication shown in Fig. 2.

Fig.. f1 is a cross section,4 taken on the line I preferably 'construct the container itself of stone. This is a special form of. oxychloride cement, which I have disclosed 1n some of my prior applications, and which contains magnesium. oxide, a suitable aggregate such as ground flint or sand, andto which dry mix is added enough magnesium chloride in solution at 26"l Baume, to make a mix which will either pour or cl n be tamped together, just as desired'. Th `s is simply illustrative and it is unnecessary to give the exact proportions as these may vary with the character of the work desired.- This container, which is designated a, is molded about a coil 11, which carries the usual expanding gases of a power refrigerat'ing system, such as sulphur dioxide, lontane, or some of the other volatile `substances usedfor this purposee There is also molded into the vcontainer a nated ,and which may e wood, bakelite, or any other suitable substance. This cuts olf the lewe'r part of the container from the bushing of heat-insulating material desigupper lpart and above the heatlinsulating" medium inv the upper art of the con-y tainer, as is shown in Fig. 1, is. incoror ated a heating element designated c, w ich may be either water or steam pipes, as shown, or any other heating element.

This can' be regulated .to vsupply just'` yide the usual electric heating element. -1s preferably supplied with current through enough heat to keep the top ofA the container and the cover from being coated with ice or any other frozen material. `In the modification shownin Figs. 2, 3 and 4, the heating element is in the formof a coil f, which may be nickel chromium wire to rohis the removable plug g, placed' on the hinge arm h, on which the cover turns.

' It will be obvious that the heating element may be placed either in the vcover itself, or

' in the neck of the container as shown in Fig. 1. The sptone-container is surrounded 'by' insulating material, -preferably cork board i, which is contained inthe wooden cabinet j. l

' VVhatI claimvis: l

- '1. In a refrigerating cabinet, the combination of a container in the form of -a singlechamber, means lfor abstracting` heatv from the lower portion of thechamber, and means for reventing the formation of ice and frost on t e upper part of the container.

2. n In a refrigeratingcabinet, the combinaf tion '\of a container,` means for abstracting heat from the lower part of the container, means for transferring heat to the upper part of the' container, and heat-insulating means betweenthertwo. l

3. In a ref rigerating cabinet,- the vcombination of a container of stone, an ex ansion coil Lfor keeping the lower part of t e container cool, and a heat-su plying element for keeping the upper part o the stone container relatively warm.

4r. In a refrigerating cabinet, the combination of a container of stone, an ex ansion coilv for keeping the lower part of t e container cool, VYa heat supplyin element for keeping the upper part of t e stone 'container relatively Warm, and an insulating bushing between the u pper and lower p0rtion of the stone container.

5. n a refrigerating cabinet, the combination of a stone container divided'into an upper and lower zone lby a bushing of insuthe container near the top, a cover for the tainer, means for abstracting heatcfrom the iipper end of the container, and a'heating container' and means for preventing the element adjacent the cover and the upper formation of ice between said cover and con- 10 end of the container for preventing ice from .tainen lforming on the throat and thetcover. In testimony whereof I have aixed my v7. In a refrigerating cabinet, the combinasignature.

tion of a container, a cover` for the con- LLOYD'G. COPEMAN. 

